基于可重构电路的电池组充电均衡方法  

Battery pack charging equalization method based on reconfigurable circuit

作　　者：任子豪 田恩刚 王立成 刘帅[2] REN Zihao;TIAN Engang;WANG Licheng;LIU Shuai(School of Optical-Electrical and Computer Engineering,University of Shanghai for Science and Technology,Shanghai 200093,China;College of Science,University of Shanghai for Science and Technology,Shanghai 200093,China)

机构地区：[1]上海理工大学光电信息与计算机工程学院,上海200093 [2]上海理工大学理学院,上海200093

出　　处：《上海理工大学学报》2023年第5期468-476,共9页Journal of University of Shanghai For Science and Technology

基　　金：国家自然科学基金资助项目(62173231,62003213)。

摘　　要：为缓解锂离子电池组在恒流充电结束后因压降导致的电池组电压不一致问题,提出了一种改进型可重构均衡电路。在电池组充电过程中,改进型可重构均衡电路可等效为传统可重构电路,通过可重构电路控制各个电池充电状态,使电池组在充电过程中达到均衡;充电结束后并静置一段时间,通过改进型可重构电路中的Buck-Boost电路进行再均衡。改进型可重构电路能够在保证充电均衡的基础上对因压降现象而造成的电池组电压不一致进行再均衡。最后,通过搭建实物平台对该改进型可重构均衡电路进行验证,并与传统可重构电路进行比较,实验结果表明该均衡电路具有良好的性能。An improved reconfigurable equalization circuit was proposed to solve the problem of battery voltage inconsistency caused by voltage drop after constant current charging.During the charging process of the battery pack,the improved reconfigurable equalization circuit can be equivalent to the traditional reconfigurable circuit,which controls the charging status of each battery through the reconfigurable circuit to achieve equalization during charging.After charging was completed and a certain period elapses,the Buck-Boost circuit in the improved reconfigurable circuit was used for rebalancing.The improved reconfigurable circuit can rebalance the battery pack voltage inconsistency caused by voltage drop while ensuring charging balance.Finally,a physical platform was built to verify the performance of the improved reconfigurable equalization circuit and compared it with the traditional reconfigurable circuit.The experimental results show that the equalization circuit has good performance.

关 键 词：锂离子电池组 可重构电路 主动均衡 压降 

分 类 号：TM912.9[电气工程—电力电子与电力传动]